Fogou

Folklore

About a furlong south-west of Trove, but on a tenement of Boleigh, is the Fuggo. It consists of a cave about six feet high, five feet wide and near forty long, faced on each side with rough stones, across which long stone posts are laid. On its north-west side a narrow passage leads into another cave of similar construction and unknown extent; as it has long been blocked up by a portion of the roof having fallen in. One may be pretty sure, however, that much of the stories about its great length are fabulous. They say that it extends from its entrance, at the foot of Boleigh hill, to the old mansion at Trove; in proof of this the old one has often been heard piping under a parlour of the house. It is supposed he meets the witches down there, who have entered by the Fuggo to dance to his music. Hares are often seen to enter the Fuggo which are never known to come out the same way; they are said to be witches going to meet their master, who provides them with some other shape to return in.

There are also traditions of this cavern having served as a place of refuge to some of the Levelis in troublesome times; and of its having frequently been used by our fair-traders, as it afforded them a secure hold for storing their goods, and to have a carouse therein.

[...] A short time ago an old inhabitant of Boleigh informed us that many persons in that neighbourhood are afraid to enter the Fuggo, even by day, as they believe that bad spirits still frequent this place. Women of villages near often threaten their crying babies that they will carry them down to the Fuggo, and leave them there for the Bucca-boo if they don't stop their squalling. there are traditions that almost all these caves were haunted by beings of a fearful nature, whose path it was dangerous to cross.

From William Bottrell's second volume of Traditions and Hearthside Stories of West Cornwall (1873), which you can read at the Sacred Texts Archive website.